Add support for IPPROTO_DIVERT

Author: jonsen

src/lib.rs

@@ -339,6 +339,10 @@ impl Protocol {
         )
     ))]
     pub const UDPLITE: Protocol = Protocol(sys::IPPROTO_UDPLITE);
+
+    /// Protocol corresponding to `DIVERT`.
+    #[cfg(all(feature = "all", any(target_os = "freebsd", target_os = "openbsd")))]
+    pub const DIVERT: Protocol = Protocol(sys::IPPROTO_DIVERT);
 }
 
 impl From<c_int> for Protocol {

src/sys/unix.rs

@@ -105,6 +105,8 @@ pub(crate) use libc::IPPROTO_SCTP;
 pub(crate) use libc::IPPROTO_UDPLITE;
 pub(crate) use libc::{IPPROTO_ICMP, IPPROTO_ICMPV6, IPPROTO_TCP, IPPROTO_UDP};
 // Used in `SockAddr`.
+#[cfg(all(feature = "all", any(target_os = "freebsd", target_os = "openbsd")))]
+pub(crate) use libc::IPPROTO_DIVERT;
 pub(crate) use libc::{
     sa_family_t, sockaddr, sockaddr_in, sockaddr_in6, sockaddr_storage, socklen_t,
 };
@@ -520,6 +522,8 @@ impl_debug!(
         )
     ))]
     libc::IPPROTO_UDPLITE,
+    #[cfg(all(feature = "all", any(target_os = "freebsd", target_os = "openbsd")))]
+    libc::IPPROTO_DIVERT,
 );
 
 /// Unix-only API.